AGN Feedback in groups and clusters of galaxies

TL;DR

This paper discusses how low-frequency radio observations combined with X-ray data provide new insights into AGN feedback mechanisms that prevent cooling in galaxy groups and clusters.

Contribution

It introduces a novel approach using GMRT radio observations alongside X-ray data to study AGN feedback in galaxy environments.

Findings

Low-frequency GMRT radio data reveal details of AGN activity.

X-ray observations show the impact of AGN on the intergalactic medium.

Combined data improve understanding of energy transfer processes.

Abstract

The lack of very cool gas at the cores of groups and clusters of galaxies, even where the cooling time is significantly shorter than the Hubble time, has been interpreted as evidence of sources that re-heat the intergalactic medium. Most studies of rich clusters adopt AGN feedback to be this source of heating. From ongoing GMRT projects involving clusters and groups, we demonstrate how low-frequency GMRT radio observations, together with Chandra/XMM-Newton X-ray data, present a unique insight into the nature of feedback, and of the energy transfer between the AGN and the IGM.